Mold



G. CUOZZO.

MOLD.

APPLICATION FILED MAR: 9. |921.

G. CUOZZO.

MOLD.

APPLICATION FILED MAR 9. 1921.

1,427,945. Patenasept. 5, 1922. SHEET 2.

2 SHEETS- GEORGE CUOZZO, OF BANGOR, MAINE.

MOLD.

Application led March 9, 1921. Serial No. 450,877.

To zZZ whom t may concern.'

Be it known that I, GEORGE CUozzo, a citizen of the United States,residing at angor, in the county of Penobscot and State of Maine, haveinvented certain new and useful Improvements in Molds, of which thefollowing is a specification.

This invention is a mold for forming a reinforced concrete pipe uponwhich Letters Patent No. 1,413,008 were granted to me April 18, 1922.The object ofthe present invention is to provide a mold in which may beproduced a pipe having the desired form and which will be of such astructure as to withstand the pressure exerted upon the walls thereofand which is adapted for the production of pipe sections of differentlengths. The invention is illustrated in the accompanying drawings andwill'be hereinafter fully set forth.

In the drawings- Figure 1 is a side elevation of a mold embodying myinvention;

Fig. 2`is a vertical diametrical section of the same;

Fig. 3 is a top plan view;

Fig. 4 is a horizontal section taken on line 4`4 of Fig. 2;

Fig. 5 is an enlarged detail section taken on the line 55 4of Fig. 1;

F ig. 6 is an enlarged detail section particularly showing the means forpreventing` spreading of the inner and outer walls of the mold attheirupper ends.

In carrying out my present invention7 I employ a pallet or base Vboard 1which may be of any desired or suitable material and of any preferreddimensions. In the upper surface of the pallet or base board, I pro--vide annular grooves which are adapted to receive the beads or flanges 2on the under side of a plate 3 which is placed upon the upper surface ofthe pallet and is provided with an annular groove in the upper side ofthe inner bead or flange to be engaged by the lower end of the innerwall 4 of the mold. Around the inner wall 4, at the lower the ' endthereof, I place a former 5 which may consist of a single annular blockor of a plurality of segmental blocks fitted together end to end aboutthe wall. The former is constructed on its inner side with grojec` tions6 which may be of any desired type and are adapted to pass throughopenings in the wall 4 and receive locking keys or wedges 7 whereby theywill be retained in position. ris shown most clearly in Fig. 4, I preferto construct the former in sections as 1t may be more easily fitted tothe inner wall of the mold and theI meeting ends of adjoining, sectionsare preferably disposed obliquely, as shown at 8, whereby' a wedgingaction is obtained to hold the members of the former firmly together. Atintervals upon the outer vide lugs 9 which will produce grooves in theinner surfaccvof 'the pipe and it will be readilyunderstood that theformer 5 produces an annular recess in the end of the pipe. The wall 4'is cylindrical and receives 70 the inwardly exerted pressure of thematerial fed into the mold to produce the pipe. To enable the wall towithstand such pressure and avoid collapse thereunder, I provide thebraces 10 which are arranged at 75 any desired intervals in the heightof the wall and are/each pivoted at one end, as shown at 11, to suitablelugsy or brackets 12 on the wall and at their opposite ends are providedwith againstl the wall so that the wall will be very effectually braced.

I also place upon the pallet 1 an outer wall 14 which is obviously ofgreater diameter than the inner wall and is to be arranged concentrictherewith. In practicing' the invention commercially, the Walls will beprovided inl 4(piantities so that by selecting the proper walls a pipeof any desired thickness may be readily produced. The

outer wall 14 is constructed of sections of sheet metal prtwid'ed attheir longitudinal edges with angle irons or bars 15 which are providedwith openingsy through their outwardly projecting webs to receive lockying keys 16, tapered pins 17 being driven through the said locking keysso as to bear ,against one angle iron or bracket and draw the head 1S ofthe engaged key against the outer face of the abutting web, as will ybereadily understood upon reference to Figs.

1 and 4. The several sections of the wall will thus be firmly fastenedtogether and may be readily assembled. The construction also facilitatesthe removal of the Wall from around a formed pipe. The outer wall isprovided at its lower end with a flared portion 19 from which acylindrical portion 20 extends so as to encircle the former 5 in spacedrelation thereto. tion 19 and the cylindrical end portion 2O produce anannular flange upon one end of surface of the former, I pro- 65 heads 13adapted to bear 80 This flared porthe pipe section and the recess formedby the former 5 will be concentric with the said flange. One of the wallsections is constructed with a longitudinal offsetl which at one endbears upon the pallet l,but at its opposite end is short of the end ofthe mold. lThis ol'l'set 2l will produce a fiatfaced base or supportingrib on the finished pipe and, immediately adjacent the end of the saidabutment, oifse'ts 22 are provided in the wall section which willproduce small arallel ribs upon the completed pipe adapted to enter oneof the grooves formed by the lugs 9 of the former Other offsets 23 areprovided upon the outer wall inembers and these offsets are hollow so asto produce lugs upon the finished plastic pipe. Some of the offsets, itwill be noted, have obliquely disposed walls and they will form upon thepipe lugs having obliquely disposed sides. The lugs with obliquelydisposed sides on the finished pipe will enter recesses in the meetingend of an abutting pipe section and will leave spaces between the lugsand the sides of the recesses. After the pipe sections are fittedtogether, it is intended that grout or other plastic binder be pouredinto the joints so as to fill said spaces and form keys firmly bindingthe sections together and producing a fluid-tight joint. lf it bedesired to produce a pipe of the maximum length possible in a givenmold, ller blocks 2li are inserted in the offsets 23 below the extremetop of the outer wall so that the said offsets will be closed and asurface producedwhich is even and smooth from end to end of the mold. lfit be desired to produce a pipe of a length less than the full length ofthe mold, the filler blocks 24 are not employed and a pipe section willthen be produced having lugs disposed upon its upper end but said upperend will be below the upper end of the mold. ln the accompanying'illustration, l have shown three sets of offsets 23 and obviously itwill be possible by the use of the one mold to produce pipes of threedifferent lengths.

`lVhen a pipe of a length less than the full length of the mold is to beproduced, filler blocks are employed in the offset 2l so that thesupporting rib or base produced upon the pipe section will terminateshort of the end thereof and these filler blocks, shown at 25 in Fig. 5,are secured in position by screws 26 or similar fastenings insertedthrough the side walls of the offset 2l. These filler blocks areprovided with grooves 27 in their inner edges so that the desired ribswill be formed upon the exterior of the pipe at the smaller end thereof.

To prevent spreading of the mold walls at their upper ends, l secure tothe inner wall at intervals hinge plates 28 to which are hingedlyconnected keepers 29 adapted to extend across and rest upon the upperedges of the walls and lie at their outer ends upon brackets 30 securedrigidly upon the outer surface of the outer wall. Locking keys 3l areinserted through registering openings in the keepers and the saidbrackets so as to prevent accidental separation of the same and holdthem in engagement so that the walls will be maintained in a fixedspaced relation and in parallelism.

The use of the mold is thought to be evident. The parts are assembled,as shown and described, and the cementitious or other plastic materialis fed into the space between the walls of the mold and permitted toset. After the pipe has been thoroughly hardened, the keepers 29 arereleased and the outer wall sections separated and removed from aroundthe pipe. Any convenient tool may then be inserted through the upper endof the mold to release the brace bars l0 and the inner wall will thus beloosened, permitting the formed pipe to be easily lifted from the palletand the inner wall.

Having thus described the invention, what is claimed as new is:

l. n pipe mold comprising inner and outer walls, the outer wall beingprovided with hollow offsets, and fillers to lit within said offsets.

2. A pipe mold comprising a pallet, inner and outer walls resting uponthe pallet in concentric relation, keepers hinged to the upper end ofone of the walls and extending over the upper edges of both walls, andmeans carried by the other wall to restrain the said keepers.

3. A pipe mold comprising inner and outer walls, a sectional formerdisposed around the lower end of the inner walls, said sections havingtheir meeting ends disposed obliquely, and lugs on some of saidsections.

e. A pipe mold comprising inner and outer walls, a former disposedaround the lower end of the inner wall, projections on the inner side ofthe former extending through the inner wall, and locking devices engagedwith said projections at the inner side of the inner wall.

In testimony whereofl aiiix my signature.

enen-en oUoZZo. [L s j

